TIA-606-C states that you need to label all fiber optic cables and pathways at both ends. You should place labels close to connectors—usually within 8 inches. You can also label jack, connector, and block hardware on. What's the difference between properly-labeled infrastructure and one that is not properly labeled can be seen in the final numbers. If technicians. The American National Standards Institute and Telecommunications Industry Association (ANSI/TIA) 606-B standard establishes voluntary labeling and recordkeeping requirements for telecommunications infrastructure. This record should include the cable identifier, source and destination of the cable, cable type, and cable length. From telecommunications, construction, and manufacturing to data centers, the proper labeling process saves time, eradicates errors, and ensures.